131330442 has 8 divisors (see below), whose sum is σ = 262660896. Its totient is φ = 43776812.

The previous prime is 131330387. The next prime is 131330443. The reversal of 131330442 is 244033131.

It is a sphenic number, since it is the product of 3 distinct primes.

131330442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (131330443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10944198 + ... + 10944209.

It is an arithmetic number, because the mean of its divisors is an integer number (32832612).

Almost surely, 2^131330442 is an apocalyptic number.

131330442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131330442 is a wasteful number, since it uses less digits than its factorization.

131330442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21888412.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 131330442 is about 11459.9494763284. The cubic root of 131330442 is about 508.3019806397.

Adding to 131330442 its reverse (244033131), we get a palindrome (375363573).

The spelling of 131330442 in words is "one hundred thirty-one million, three hundred thirty thousand, four hundred forty-two".